if (msg->data == "done") { ROS_INFO("[GrabResultCB] grab_box done!"); std_msgs::String waypoint_msg; if (put_count == YELLOW) { waypoint_msg.data = "2"; } else if (put_count == BLUE) { waypoint_msg.data = "3"; } else if (put_count == RED) { waypoint_msg.data = "4"; } waypoint_pub.publish(waypoint_msg); step = STEP_GOTO_WP2; }这个代码要怎么改,然后实现可以跑到别的航点?
时间: 2024-02-10 19:13:22 浏览: 49
要将这段代码改为可以跑到别的航点,你需要修改 waypoint_msg.data 的值来达到目的地的航点编号。假设你要跑到航点5,那么你需要将代码修改为:
```
if (msg->data == "done")
{
ROS_INFO("[GrabResultCB] grab_box done!");
std_msgs::String waypoint_msg;
waypoint_msg.data = "5"; // 修改航点编号为5
waypoint_pub.publish(waypoint_msg);
step = STEP_GOTO_WP2;
}
```
这样,机器人就会前往航点5了。请注意,航点编号的具体值取决于你的实际应用中的场景,需要根据实际情况进行修改。
相关问题
if (step == STEP_GRAB_BOX) { if (msg->data == "done") { ROS_INFO("[GrabResultCB] grab_box done!"); std_msgs::String waypoint_msg; if (put_count == YELLOW) { waypoint_msg.data = "2"; } else if (put_count == BLUE) { waypoint_msg.data = "3"; } else if (put_count == RED) { waypoint_msg.data = "4"; } waypoint_pub.publish(waypoint_msg); step = STEP_GOTO_WP2; } }什么意思
这是一个 ROS 节点的回调函数,当机器人当前的操作步骤为 `STEP_GRAB_BOX` 时,会根据传入的消息判断是否完成了抓取物品的任务。如果完成了,则会发布一个表示下一步目标位置的消息到 `waypoint_pub` 话题上,并将操作步骤更新为 `STEP_GOTO_WP2`。其中,根据 `put_count` 的不同值,消息中的数据会设为不同的字符串,表示机器人需要前往的不同位置。
帮我修改#include <ros/console.h> #include <ros/ros.h> #include <serial/serial.h> #include <iostream> #include <std_msgs/String.h> #include <std_msgs/Empty.h> serial::Serial sp; //回调函数 void write_callback(const std_msgs::String::ConstPtr& msg) { ROS_INFO_STREAM("Writing to serial port" <<msg->data); sp.write(msg->data); //发送串口数据 } int main(int argc, char** argv) { ros::init(argc, argv, "serial_port_servos"); ros::NodeHandle nnode; ros::Subscriber write_sub = nnode.subscribe("write", 1000, write_callback); ros::Publisher read_pub = nnode.advertise<std_msgs::String>("read", 1000); serial::Timeout to = serial::Timeout::simpleTimeout(100); //设置要打开的串口名称 sp.setPort("/dev/ttyUSB0"); //设置串口通信的波特率 sp.setBaudrate(9600); //串口设置timeout serial::Timeout to = serial::Timeout::simpleTimeout(1000); sp.setTimeout(to); try { //打开串口 sp.open(); } catch(serial::IOException& e) { ROS_ERROR_STREAM("Unable to open port."); return -1; } //判断串口是否打开成功 if(sp.isOpen()) { ROS_INFO_STREAM("/dev/ttyUSB0 is opened."); } else { return -1; } ros::Rate loop_rate(500); while(ros::ok()) { //获取缓冲区内的字节数 size_t n = sp.available(); if(n!=0) { ROS_INFO_STREAM("Reading from serial port\n"); uint8_t buffer[1024]; //读出数据 n = sp.read(buffer, n); std_msgs::String result; result.data = sp.read(sp.available()); ROS_INFO_STREAM("Read: " << result.data); read_pub.publish(result); /* for(int i=0; i<n; i++) { //16进制的方式打印到屏幕 std::cout << std::hex << (buffer[i] & 0xff) << " "; } std::cout << std::endl; //把数据发送回去 sp.write(buffer, n); } */ ros::spinOnce(); loop_rate.sleep(); } //关闭串口 sp.close(); return 0; }
你的代码中有一些问题,我帮你修改了一下,你可以参考一下:
```
#include <ros/console.h>
#include <ros/ros.h>
#include <serial/serial.h>
#include <iostream>
#include <std_msgs/String.h>
#include <std_msgs/Empty.h>
serial::Serial sp;
// 回调函数
void write_callback(const std_msgs::String::ConstPtr& msg)
{
ROS_INFO_STREAM("Writing to serial port " << msg->data);
sp.write(msg->data);
}
int main(int argc, char** argv)
{
ros::init(argc, argv, "serial_port_servos");
ros::NodeHandle nnode;
ros::Subscriber write_sub = nnode.subscribe("write", 1000, write_callback);
ros::Publisher read_pub = nnode.advertise<std_msgs::String>("read", 1000);
serial::Timeout to = serial::Timeout::simpleTimeout(100);
// 设置要打开的串口名称
sp.setPort("/dev/ttyUSB0");
// 设置串口通信的波特率
sp.setBaudrate(9600);
// 串口设置timeout
sp.setTimeout(to);
try
{
// 打开串口
sp.open();
}
catch(serial::IOException& e)
{
ROS_ERROR_STREAM("Unable to open port.");
return -1;
}
// 判断串口是否打开成功
if(sp.isOpen())
{
ROS_INFO_STREAM("/dev/ttyUSB0 is opened.");
}
else
{
return -1;
}
ros::Rate loop_rate(500);
while(ros::ok())
{
// 获取缓冲区内的字节数
size_t n = sp.available();
if(n != 0)
{
ROS_INFO_STREAM("Reading from serial port");
uint8_t buffer[1024];
// 读出数据
n = sp.read(buffer, n);
std_msgs::String result;
result.data = sp.read(sp.available());
ROS_INFO_STREAM("Read: " << result.data);
read_pub.publish(result);
/*
for(int i = 0; i < n; i++)
{
// 16进制的方式打印到屏幕
std::cout << std::hex << (buffer[i] & 0xff) << " ";
}
std::cout << std::endl;
// 把数据发送回去
sp.write(buffer, n);
*/
}
ros::spinOnce();
loop_rate.sleep();
}
// 关闭串口
sp.close();
return 0;
}
```
修改后,你需要重新编译运行代码。这个代码的作用是读取串口数据并发布到 ROS 中,同时也可以接收来自 ROS 的消息并发送到串口。
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